# Relationship history for MSHA mine 0202758

Current hierarchy: **Philip N  Levin → Levin Stone Co., Inc. → Stone Mountain**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Philip N  Levin → Stone Mountain; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miller Stone Company → Stone Mountain; 1998-03-01 to 1999-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Miller → Stone Mountain; 1998-03-01 to 1999-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Miller → Miller Stone Company; 1998-03-01 to 1999-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Stone Mountain → Stone Mountain; 1999-11-04 to 2001-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Philip N  Levin → Stone Mountain; 1999-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Stone Mountain; 1999-11-04 to 2001-11-24; source msha-controller-operator-history
- **operator_operates_mine:** Oliver Stone With A Twist → Stone Mountain; 2001-11-25 to 2003-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Steven A  Cignoli → Stone Mountain; 2002-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven A  Cignoli → Oliver Stone With A Twist; 2002-02-20 to 2003-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Stone Mountain → Stone Mountain; 2003-07-18 to 2006-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Stone Mountain; 2003-07-18 to 2006-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Levin Stone Co., Inc. → Stone Mountain; 2006-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Levin Stone Co., Inc.; 2006-05-18 to current/open; source msha-controller-operator-history